LoFP / it is possible the event logging service gets shut down due to system errors or legitimately administration tasks. filter as needed.

Techniques

• T1070
• T1070.001

Sample rules

Suspicious Event Log Service Behavior

• source: splunk
• technicques:
  • T1070
  • T1070.001

Description

The following analytic detects the shutdown of the Windows Event Log service using Windows Event ID 1100. This event is logged every time the service stops, including during normal system shutdowns. Monitoring this activity is crucial as it can indicate attempts to cover tracks or disable logging. If confirmed malicious, an attacker could hide their activities, making it difficult to trace their actions and investigate further incidents. Analysts should verify if the shutdown was planned and review other alerts and data sources for additional suspicious behavior.

Detection logic

(`wineventlog_security` EventCode=1100) 
| stats count min(_time) as firstTime max(_time) as lastTime by dest name EventCode 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)`
| `suspicious_event_log_service_behavior_filter`